Cyclone or BBSHD on Specialized FSR?

Good morning all. Looking at a $200 Specialized FSR on CL. Would this frame accommodate a Cyclone or BBSHD?

Its prob pointed out in the ad.. but theres no shock on there, so make sure you're ready to deal with that.. Given the design of the bike (lightweight cross country) and the age, I prob wouldn't be putting Cyclone levels of power thru that back end.

Fyi, I have owned and serviced many different FSRs, so not bashing the bike, but its a fact old aluminum gets brittle, so really look it over for cracks, esp where the link attaches, and the lower swingarm. It's also a really old one that doesn't have mounting tabs for disc brake on the rear, so something to factor in.

That a frame is made from aluminum doesn't really mean much by itself. The design and construction are so much more important. In addition to that, how the bike was used/abused would be important as well. And the same goes for steel or any other material. But with 3000 watts of power, you need to look closely if the goal is to avoid frame and other failures.

Personally, I'd look at what others have done and make my best estimate from their successes and failures.
Here's thread about a 3000w Cyclone build with a Specialized Stumpjumper. I haven't read it yet. Maybe the Cyclone broke it. Maybe it didn't. It might be worth a read.

A search might lead to more good threads.
https://endless-sphere.com/forums/viewtopic.php?t=78681

Wolfeman said:

Good morning all. Looking at a $200 Specialized FSR on CL. Would this frame accommodate a Cyclone or BBSHD?

00p0p_17tVb3Hes8v_1200x900.jpg

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Tons of room for mid drive in front of crank.
Only thing your missing is triangle space above the crank for say a battery pack triangle bag, but thats not a huge concern. Just use a rear rack, and place batteries in a pannier bag.

I had that frame that I chopped up and was going to make a trailer out of it somehow. With our recent house cleaning and clearing out storage entirely to save money, that frame was thrown into dumpster without any thought.

Chain Reaction Cycle has a shock for $121, reg $600.

Was thinking of having it be a trail bike with some Maxxis Holy Rollers, a BBSHD and a smaller tooth front chain ring. I usually wear a backpack, so would just put my 52V 15aH pack in there with a tether cable. Seems like it would be a really nice set up for exploring new trails at a slower pace than my daily commuter with the HS3580 is comfortable with.

Wolfeman said:

Was thinking of having it be a trail bike with some Maxxis Holy Rollers

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https://endless-sphere.com/forums/viewtopic.php?f=2&t=89415&p=1306643&hilit=Maxxis+Holy+Rollers#p1306643

Holy Rollers are some of the thinnest, least protected tires around. Between the knobs, there's just about nothing to stand in the way of a puncture.

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Schwalbe Marathon Plus are the ones to buy!
Schwalbe Magic Mary BikePark are good too, but no nobs.
There is one or two more Schwalbe's with great protection, but I cant find my list.
Schwalbe Hurricane is one step above average.

Why all Schwalbe? Because they list a Protection and Durability rating on their tires on their website.

Holy Rollers are some of the thinnest, least protected tires around. Between the knobs, there's just about nothing to stand in the way of a puncture.

Click to expand...

Schwalbe Marathon Plus are the ones to buy!
Schwalbe Magic Mary BikePark are good too, but no nobs.
There is one or two more Schwalbe's with great protection, but I cant find my list.
Schwalbe Hurricane is one step above average.

Why all Schwalbe? Because they list a Protection and Durability rating on their tires on their website.
[/quote]

Couldn't agree more about the Schwalbes. I use 26"x2" Marathon Plus tires on my commuter and they are the best street tires I've ever used. NO flats and low rolling resistance combined with great traction. I've used the Holy Rollers before, and had good luck with them.

There are a cpl diff treads, I see a road with no nobs, but there is also a nobby tire.

http://www.chainreactioncycles.com/ca/en/schwalbe-marathon-plus-mtb-tyre-smartguard/rp-prod143787

A 700C Touring, a Road
http://www.chainreactioncycles.com/ca/en/s?q=marathon+plus&cat=direct

Wolfeman said:

Was thinking of having it be a trail bike with some Maxxis Holy Rollers, a BBSHD and a smaller tooth front chain ring. I usually wear a backpack, so would just put my 52V 15aH pack in there with a tether cable. Seems like it would be a really nice set up for exploring new trails at a slower pace than my daily commuter with the HS3580 is comfortable with.

Click to expand...

Have you considered the TS? I use one on an older hardtail 29"er, the torque sensing PAS is what sets it apart. You'll want the one with the 52v controller and throttle, they are available. I have a 42/42 on my bike and it climbs like a billy goat in eco and with that battery you could go all day long. Did 3+ hrs. today of single track in a new area on 6Ah. All in eco mode btw and not because I was trying to conserve it just was all the assist I needed for the terrain.

On my road bike later in the day I did the same amount of distance, 21 miles, in 1hr 15min and used the same amount of Ah pretty much.

As an aside I was riding with an old friend that had a Levo. First time I had gotten together on a real trail system with my bike and one of the current crop of e mtb's based on the EU regs. Other than the Brose system's torque sensing feeling a bit more refined and the fact that it is virtually silent due to the belt drive in the reduction gear it really didn't perform $6000 dollars better than my bike. The FS was nice but didn't care for the + size tires, they were like skates in a few of the puddles that were in turns and I had to do a few recoveries.

FSR are great to convert to E bikes But not that frame , Keep looking for a newer Stumpjumper FSR with disc brakes you can find them off of craigs list all the time less then $800 That frame is one of the worst for converting in your pic

Looks about the same year as mine. Mine had plenty of room for the battery under the frame. I am running a 24 inch front but you should still have room. Sorry cannot help on the midrive.. I still need to build a custom mount to move it up and maybe build a bash guard around it too.

Where can you buy empty dolphin cases?

This just popped up on CL locally for $400.

Sorry just caught this thread again. That FSR is way different than mine/newer maybe. Less room for a battery under the frame like mine. Plus I put a 24 inch on front. That is a lot of money though. I only gave 150 on CL for mine. I do love it though. It was the top of the line 30 yrs ago . It is the best bike I have ever rode or owned. Very plush on the street.

Any more progress?

I just looked back on the first bike- just like mine. A lot more room under the frame for a battery. Someone put a Judy fork on mine with disc. I just use regen in back since no disc and I laced my hub in a 20 inch for more torque.