Excelsior/Strong GTS Cromotor Build

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pucksterpete   1 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by pucksterpete » Oct 27 2014 5:46pm

Image



Optim Alp Hardtail with MXUS Motor
20S 2P Turnigy 5.0 Hard Case
Top speed 38mph tops :)
Hyena Special
http://endless-sphere.com/forums/viewto ... 97#p585997
-------
Excelsior/Strong GTS with Cromotor
24S 3P Turnigy 5.0 Hard Case
Top speed so far 53mph
http://endless-sphere.com/forums/viewto ... =6&t=46993

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pucksterpete   1 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by pucksterpete » Nov 28 2014 2:14am

muddy days and shit weather are upon us, Vee Rubber Pro140's were a must for the trails, they dig pretty good

Image
Image
Image
Optim Alp Hardtail with MXUS Motor
20S 2P Turnigy 5.0 Hard Case
Top speed 38mph tops :)
Hyena Special
http://endless-sphere.com/forums/viewto ... 97#p585997
-------
Excelsior/Strong GTS with Cromotor
24S 3P Turnigy 5.0 Hard Case
Top speed so far 53mph
http://endless-sphere.com/forums/viewto ... =6&t=46993

whereswally606   100 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by whereswally606 » Jan 03 2015 9:15am

Hey pete, love reading the build, just bought an ecolux frame which is how these bikes are branded in the UK . also Inspired by Brentis &mushymelon builds and hopefully I will be able to dip my toe into the welding waters as this frame begs for a bit of reinforcement. Greet work so far and keep it up.
Distributing "Lebowski" FOC Controller PCB (Through hole) since 2016
Moped: Emax 110s 2009

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pucksterpete   1 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by pucksterpete » Jan 03 2015 10:00am

whereswally606 wrote:Hey pete, love reading the build, just bought an ecolux frame which is how these bikes are branded in the UK . also Inspired by Brentis &mushymelon builds and hopefully I will be able to dip my toe into the welding waters as this frame begs for a bit of reinforcement. Greet work so far and keep it up.
Thanks man, its been fun, I try and get out at least once a day. I just picked up some Shinko's SR-241 17 X 2.5 for the Spring, the Sava's mc11 I had this past summer just don't cut it for light trail.

You have plenty of room for batteries in that frame you have. What are you thinking of running? Look forward on seeing your build

Pete
Optim Alp Hardtail with MXUS Motor
20S 2P Turnigy 5.0 Hard Case
Top speed 38mph tops :)
Hyena Special
http://endless-sphere.com/forums/viewto ... 97#p585997
-------
Excelsior/Strong GTS with Cromotor
24S 3P Turnigy 5.0 Hard Case
Top speed so far 53mph
http://endless-sphere.com/forums/viewto ... =6&t=46993

whereswally606   100 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by whereswally606 » Jan 04 2015 5:57am

I have some zippy flightmax lipo which is sat used so will repurpose that and think ill mod my magic pie A la zappy and mushymelon. May stay with bike tyres like marathon plus. The other option on motors is two wheel drive since I have some inverted forks which would work well.
Distributing "Lebowski" FOC Controller PCB (Through hole) since 2016
Moped: Emax 110s 2009

whereswally606   100 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by whereswally606 » Jan 07 2015 4:27pm

Parcel delivered today. It's pretty damn heavy. Battery came with it too. The battery alone is a cumbersome object. Will post pics at weekend once I've chance to strip it down.
Distributing "Lebowski" FOC Controller PCB (Through hole) since 2016
Moped: Emax 110s 2009

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Tommy L   100 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by Tommy L » Jan 18 2015 10:27am

Pete!!!!! I've been keeping up on your post!

Very nice.......
I'll be ordering Rims and Tires soon. I'm thinking of the Mxus 3000w DD on my GTS210 frame.
What do people think of the MXUS over the cro? Or should I just do the Cro? Was thinking mid dirve as well. hmmmmm

Tommy L sends..... :)
http://www.rawvelocity.com

- 4th Hoolagan FS Mtn 9C-2810 with 128v nom 9.2ah A123 40S40P(1.2Kw) - Lyen 18Fet 4115 - 77.8kph :)
http://endless-sphere.com/forums/viewto ... =4&t=39480

- 3rd Catrike 700 Bionx PL350 Velo build
http://www.youtube.com/watch?v=rYdnkaAhVtI

- 2nd 150lbs Pusher Trailer
http://www.youtube.com/watch?v=Q1qTc4sjORY

- 1st Sears NS mtn bike - Rigid 10a drill 800rpm - 2 12v AGM - 1000 watt inverter - 600w dimmer for throttle, wicked torque!

48.2mph/77.8kph Club

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pucksterpete   1 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by pucksterpete » Jan 18 2015 4:31pm

I know there is a thread on here about the MXUS 3000 or group buy. Not sure if anyone has posted any data about the motor. I have had nothing but greatness from the Cromotor. What rim and tires are you ordering? I know lot of decisions to make. But in the end, get out there and ride that bike.

Pete
Optim Alp Hardtail with MXUS Motor
20S 2P Turnigy 5.0 Hard Case
Top speed 38mph tops :)
Hyena Special
http://endless-sphere.com/forums/viewto ... 97#p585997
-------
Excelsior/Strong GTS with Cromotor
24S 3P Turnigy 5.0 Hard Case
Top speed so far 53mph
http://endless-sphere.com/forums/viewto ... =6&t=46993

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Tommy L   100 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by Tommy L » Jan 18 2015 5:09pm

pucksterpete wrote:I know there is a thread on here about the MXUS 3000 or group buy. Not sure if anyone has posted any data about the motor. I have had nothing but greatness from the Cromotor. What rim and tires are you ordering? I know lot of decisions to make. But in the end, get out there and ride that bike.

Pete

Moto rims with pirelli ML75 :)

What rims do you like?
http://www.rawvelocity.com

- 4th Hoolagan FS Mtn 9C-2810 with 128v nom 9.2ah A123 40S40P(1.2Kw) - Lyen 18Fet 4115 - 77.8kph :)
http://endless-sphere.com/forums/viewto ... =4&t=39480

- 3rd Catrike 700 Bionx PL350 Velo build
http://www.youtube.com/watch?v=rYdnkaAhVtI

- 2nd 150lbs Pusher Trailer
http://www.youtube.com/watch?v=Q1qTc4sjORY

- 1st Sears NS mtn bike - Rigid 10a drill 800rpm - 2 12v AGM - 1000 watt inverter - 600w dimmer for throttle, wicked torque!

48.2mph/77.8kph Club

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Tommy L   100 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by Tommy L » Jan 18 2015 5:12pm

I really liked how extronebike turned out (LSWB?)

Image
http://www.rawvelocity.com

- 4th Hoolagan FS Mtn 9C-2810 with 128v nom 9.2ah A123 40S40P(1.2Kw) - Lyen 18Fet 4115 - 77.8kph :)
http://endless-sphere.com/forums/viewto ... =4&t=39480

- 3rd Catrike 700 Bionx PL350 Velo build
http://www.youtube.com/watch?v=rYdnkaAhVtI

- 2nd 150lbs Pusher Trailer
http://www.youtube.com/watch?v=Q1qTc4sjORY

- 1st Sears NS mtn bike - Rigid 10a drill 800rpm - 2 12v AGM - 1000 watt inverter - 600w dimmer for throttle, wicked torque!

48.2mph/77.8kph Club

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Tommy L   100 kW

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Location: Saint Augustine, Florida USA

Re: Excelsior/Strong GTS Cromotor Build

Post by Tommy L » Jan 23 2015 8:16am

Hi Pete!
Did you have any problems with finding a front fork that fits?
Did the Marcozzi fit?
http://www.rawvelocity.com

- 4th Hoolagan FS Mtn 9C-2810 with 128v nom 9.2ah A123 40S40P(1.2Kw) - Lyen 18Fet 4115 - 77.8kph :)
http://endless-sphere.com/forums/viewto ... =4&t=39480

- 3rd Catrike 700 Bionx PL350 Velo build
http://www.youtube.com/watch?v=rYdnkaAhVtI

- 2nd 150lbs Pusher Trailer
http://www.youtube.com/watch?v=Q1qTc4sjORY

- 1st Sears NS mtn bike - Rigid 10a drill 800rpm - 2 12v AGM - 1000 watt inverter - 600w dimmer for throttle, wicked torque!

48.2mph/77.8kph Club

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pucksterpete   1 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by pucksterpete » Jan 23 2015 9:43am

Hey Tommy,

Regarding a rims from your previous reply, I wasn't able to find a good price on 17" Alu rims here in France, everything was too expensive & I wasn't going to have them shipped from the States, so, I did find online, at a pitbike shop, 17 Steel rims, no name brand from China, heres the link to give you an idea.

http://www.mxunity.com/jantes-roues-com ... 03252.html

The front Marzocchi hub I am using is only 32 spoke hub & my rear rim with the Cromotor is 36 spokes, I screwed up earlier when ordering the front rim, I got 36 instead of 32 spokes. But anyway all is good now.

Yes on the Marzocchi fork, they fit fine. I originally had bought a dual crown set of Marzocchi forks, but then I realized the way this frame is built, it was going to run interference on each of the stanchions, I wasn't willing to cut or modify the frame so they would fit. So, just went with single crown Marzocchi 55 RS Forks 140mm.

Here is a today photo of the bike now, GOT MUD!!! :twisted:
Image
Image
Image
Optim Alp Hardtail with MXUS Motor
20S 2P Turnigy 5.0 Hard Case
Top speed 38mph tops :)
Hyena Special
http://endless-sphere.com/forums/viewto ... 97#p585997
-------
Excelsior/Strong GTS with Cromotor
24S 3P Turnigy 5.0 Hard Case
Top speed so far 53mph
http://endless-sphere.com/forums/viewto ... =6&t=46993

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Tommy L   100 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by Tommy L » Jan 24 2015 12:01pm

Pete! Thank you!

Does 140mm give a good rake angle
For this frame?

Good to know about the interference on
The double/triple crown fork.
I have to do frame welding anyway, so
I may mod that area. I'm going to weld gussets
Everywhere!
http://www.rawvelocity.com

- 4th Hoolagan FS Mtn 9C-2810 with 128v nom 9.2ah A123 40S40P(1.2Kw) - Lyen 18Fet 4115 - 77.8kph :)
http://endless-sphere.com/forums/viewto ... =4&t=39480

- 3rd Catrike 700 Bionx PL350 Velo build
http://www.youtube.com/watch?v=rYdnkaAhVtI

- 2nd 150lbs Pusher Trailer
http://www.youtube.com/watch?v=Q1qTc4sjORY

- 1st Sears NS mtn bike - Rigid 10a drill 800rpm - 2 12v AGM - 1000 watt inverter - 600w dimmer for throttle, wicked torque!

48.2mph/77.8kph Club

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pucksterpete   1 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by pucksterpete » Jan 25 2015 8:52am

Does 140mm give a good rake angle
For this frame?
I think it does, the 'trail' of the bike doesn't feel slow on steering. I find that at high speeds, she steers just fine, and I am 220lbs.

Hope this helps.

Pete
Optim Alp Hardtail with MXUS Motor
20S 2P Turnigy 5.0 Hard Case
Top speed 38mph tops :)
Hyena Special
http://endless-sphere.com/forums/viewto ... 97#p585997
-------
Excelsior/Strong GTS with Cromotor
24S 3P Turnigy 5.0 Hard Case
Top speed so far 53mph
http://endless-sphere.com/forums/viewto ... =6&t=46993

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mushymelon   100 W

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Re: Excelsior/Strong GTS Cromotor Build

Post by mushymelon » Jan 26 2015 8:12pm

Tommy L wrote:Pete! Thank you!

Does 140mm give a good rake angle
For this frame?

Good to know about the interference on
The double/triple crown fork.
I have to do frame welding anyway, so
I may mod that area. I'm going to weld gussets
Everywhere!
Tommy my bikes gonna be up for sale soon its already modded, just saying :)

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Re: Excelsior/Strong GTS Cromotor Build

Post by Ussyamoto » Jan 31 2015 6:27am

Awesome build!
It's making me want to pick up a Cromo.
I have a 74v 40a mini-Kelly with the same hardcase batteries.
What's the average speed and range I could expect on 20s 10Ah?

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pucksterpete   1 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by pucksterpete » May 11 2015 4:34am

Took off the BIG mud tires and put on the Shinko's SR-241 17 X 2.5 I bought earlier for the Spring. Took it back on the trails which are much dryer and she handles Great!!!

Image
Image
Image
Optim Alp Hardtail with MXUS Motor
20S 2P Turnigy 5.0 Hard Case
Top speed 38mph tops :)
Hyena Special
http://endless-sphere.com/forums/viewto ... 97#p585997
-------
Excelsior/Strong GTS with Cromotor
24S 3P Turnigy 5.0 Hard Case
Top speed so far 53mph
http://endless-sphere.com/forums/viewto ... =6&t=46993

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pucksterpete   1 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by pucksterpete » May 17 2015 4:52pm

BOOM, Snapped steerer tube at 35mph when braking, thank god for a MX helmet, other than that knee is a little banged up

Image
Image
Optim Alp Hardtail with MXUS Motor
20S 2P Turnigy 5.0 Hard Case
Top speed 38mph tops :)
Hyena Special
http://endless-sphere.com/forums/viewto ... 97#p585997
-------
Excelsior/Strong GTS with Cromotor
24S 3P Turnigy 5.0 Hard Case
Top speed so far 53mph
http://endless-sphere.com/forums/viewto ... =6&t=46993

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macribs   1 GW

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Re: Excelsior/Strong GTS Cromotor Build

Post by macribs » May 17 2015 5:38pm

What do you reckon was the root cause of the failure of the fork? Could it be bearings with too much give or maybe over tighten when assembled? I mean I have seen insane drops and jumps made by DH guys and no matter how bad their landing is they always seems to get away without mechanical failure.

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amberwolf   100 GW

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Re: Excelsior/Strong GTS Cromotor Build

Post by amberwolf » May 17 2015 6:07pm

Since that break's at the top of the headtube, teh force that did it was from the bars and whatever weight was on them.

My guess from what little I can see of the area around it is scoring along that area that then was able to fatigue-crack over time.

Is it an aluminum alloy steerer? Or steel?

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pucksterpete   1 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by pucksterpete » May 18 2015 8:02am

macribs wrote:What do you reckon was the root cause of the failure of the fork? Could it be bearings with too much give or maybe over tighten when assembled? I mean I have seen insane drops and jumps made by DH guys and no matter how bad their landing is they always seems to get away without mechanical failure.
Not a clue, it wasn't over-tightened, it wasn't loose either, got a fork for sale?
Optim Alp Hardtail with MXUS Motor
20S 2P Turnigy 5.0 Hard Case
Top speed 38mph tops :)
Hyena Special
http://endless-sphere.com/forums/viewto ... 97#p585997
-------
Excelsior/Strong GTS with Cromotor
24S 3P Turnigy 5.0 Hard Case
Top speed so far 53mph
http://endless-sphere.com/forums/viewto ... =6&t=46993

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pucksterpete   1 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by pucksterpete » May 18 2015 8:04am

amberwolf wrote:Since that break's at the top of the headtube, teh force that did it was from the bars and whatever weight was on them.

My guess from what little I can see of the area around it is scoring along that area that then was able to fatigue-crack over time.

Is it an aluminum alloy steerer? Or steel?
I see that too, the steerer tube is aluminum alloy, must had been a weak spot somewhere. Glad I wasn't on the rode going faster :shock:
Optim Alp Hardtail with MXUS Motor
20S 2P Turnigy 5.0 Hard Case
Top speed 38mph tops :)
Hyena Special
http://endless-sphere.com/forums/viewto ... 97#p585997
-------
Excelsior/Strong GTS with Cromotor
24S 3P Turnigy 5.0 Hard Case
Top speed so far 53mph
http://endless-sphere.com/forums/viewto ... =6&t=46993

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amberwolf   100 GW

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Re: Excelsior/Strong GTS Cromotor Build

Post by amberwolf » May 18 2015 5:11pm

FWIW, you can press the steerer out and press a new one in (or one off another fork), so you could put a steel steerer in if you want to. I forget the thread name, but I discussed that with someone here on ES a few years back as a possible way to use a fork on a different sized headtube than it was made for, and/or to get a longer steerer than it had.

I never got around to trying it as I ended up with other solutions, but it would make your fork still usable. :)


If you don't wanna fix the fork you could also use it as a *rear* shock, if you ever build a custom bike. ;) (I started to do that several times, but enver ended up doing suspension on the rear of CrazyBike2. I still have the Manitou fork to try it with, though, whcih now has broken-off dropouts, if I ever get to working on it again).

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pucksterpete   1 kW

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Re: Excelsior/Strong GTS Cromotor Build

Post by pucksterpete » May 19 2015 2:41am

I will definitely search this option. I will need to find a local machine shop that can remove the old and press the new tube in. Shouldn't be hard to source a new tube. The forks are in fine condition. $$$ saved. Thanks
Optim Alp Hardtail with MXUS Motor
20S 2P Turnigy 5.0 Hard Case
Top speed 38mph tops :)
Hyena Special
http://endless-sphere.com/forums/viewto ... 97#p585997
-------
Excelsior/Strong GTS with Cromotor
24S 3P Turnigy 5.0 Hard Case
Top speed so far 53mph
http://endless-sphere.com/forums/viewto ... =6&t=46993

markz   100 GW

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Re: Excelsior/Strong GTS Cromotor Build

Post by markz » May 27 2015 11:14pm

Looks like a lot of weak spots on this frame.
Good to know as a heads up!

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