Haibike Dh conversion

[snoopshomme86]

Hi guys
I was long time not here .
Last Friday I bought an Haibike 29er.I will convert it to a DH bike.
So I will show you my progress.Sorry for my bad English

First I swapped the 29er to 24 with 3"whide tires
I had to swap the rear hub also because Haibike has a 142x12mm Rear end.

The tyeres have rim protection

My good old White Brothers fork is working at the front.
Maybe I will dip it black with plastidip

At the rear I want to put in a 200mm long rearshock to correct the geometry of the bike and put in some extra travel.

 

[izeman]

the pics show up super small. nothing to see in them. . they can be up to 800px wide to be displayed correctly.

 

[mushymelon]

I like it

Whats it weigh?

 

[snoopshomme86]

Sorry I'm not very good in media I will try to insert them bigger.
I haven't any weight yet.I think it's about 25-27kg s the standard weight of the bike is 22,5 kilograms

 

[snoopshomme86]

The weight is about 26kg this thing says

 

[jase1979]

Adding long shocks front and back would raise the bb height, making it not very good for cornering. I will still watch your progress.

 

[Leebolectric]

Dangerous game adding that much more travel...but achievable perhaps if you have a good dental plan.
The triple clamp fork is gonna put a LOT more stress on the head tube than the stock fork...the frame may or may not handle it.
By the time you add the rear shock extension...the bottom bracket is gonna be crazy high which will mess up cornering and stability.

Please consider something like these...They will allow a longer shock without the raising BB as much...be sure to CHECK CLEARANCE!
http://www.burgtec.co.uk/products/offset-shock-hardware/burgtec-titanium-offset-shock-hardware/

Id keep it high speed couch mode...big jumps would be scary for this bike.

 

[snoopshomme86]

I don't think that it will be much more stress for the frame because a DH USD fork like this is more flexible in comparison to an single crown 150mm all mountain fork!
I specifically used a 29er frame to become enough space for more travel and a long wheelbase in combination with the 24" wheels .The bottom bracket will be in normal high with the longer Rearshock also the front is not much out of standard.

 

[Lurkin]

I don't think that it will be much more stress for the frame because a DH USD fork like this is more flexible in comparison to an single crown 150mm all mountain fork!
I specifically used a 29er frame to become enough space for more travel and a short wheelbase in combination with the 24" wheels .The bottom bracket will be in normal high with the longer Rearshock also the front is not much out of standard.

Err. Didn't work out for me too well last time... ended up well and truly snapping the headtube off, eating dirt. And that didn't have any batteries/motor attached to it, just me. Only glad it was dirt/sandish material rather than something harder.

But who could resist the temptation of putting that on there?!

 

[KalSteve]

Unfortunately that rear suspension geometry is not going to allow much additional height.

 

[Leebolectric]

The stock shock looks like a 7.5x2"... if so look for a 7.875x2.25" shock...it will have the same position when bottomed out, and risk the frame least.
I really think it's gonna be bad news to add anything longer.
If you add the 7.875x2.25 shock AND add the OffsetShockBushings...there will be around 3mm past stock bottom and 6mm above stock top extension.
That is your best bet...to put the least stress on the frame...and still add about an inch of travel.
Going up more than one size like this is not likely to be fun or safe.
Good luck

(P.S. The idea that the dual crown fork "flexes" more and is safer for the head tube is wrong...that lever is longer and better mounted, science says rethink your plan)

 

[snoopshomme86]

I know what you want to tell me.
Its bad to take a foto with one hand

The DH fork is axle to axle about 1" longer than the original.But only because I but the crown 's as high as possible I can but them about 2 inches down on the sliding part of the fork if you know what I mean (sorry again for my bad writing)
The shock is 185mm long at 41mm travel.
At the moment my bottom bracket is about 2 inches to low in comparison to original.
Haibike us the same tube set for all sduro and nduro bikes including the allmountain and dh bikes. I think the framework is very massive at the front

 

[jonnydrive]

snoopshomme86,
can you give us some info's about the engine performance on up-hill tracks ? (I suppose you use ebike to avoid skilifts for going up hill)

thanks

 

[snoopshomme86]

I think the power of the yamaha is enough to came up every hill really relaxed.Sure it's not an E-Bike and has only 250 Watt continous -so you have to do something to come forward.But the tourqe sensor works very fine and you are more biking than driving.
I put the speedsensor to the crank so it run's about 43 km/h in relaxed pedaling.
Ofcourse the system is very priced/but here the police and gouverment is not so lucky if you're driving an selfbuild.
So for me its the only way to drive an legal fast e-bike (if the speed sensor is mounted correctly)

 

[snoopshomme86]

Did some trailriding today -nothing with white Christmas here

Very muddy here this days and my tires are only well at summer lol
I will put on some others soon.
I really like the way the Yamaha Drive Runs, really smooth starting and stopping -you have only to drive-I love it :lol: :lol:
Wish you all a Mary Christmas and a happy new year!
Thanks to all users and people from endless sphere for this great place!!

 

[snoopshomme86]

Did some progress these days,i only found a 190mm shock here but the driving is much better with it and I have enough ground clearance to drive corners right now.