Longer 35mm forks

Hello all,
I would like to extend the length of a pair of 1973 CR forks. Will the stanchions (tubes) from a later, say 1978 model fit the earlier fork bottoms?
Thanks

Are you looking for more fork travel or a taller seat height?

Looking for the complete bike to be raised.
I need to keep the older style fork bottoms with the central spindle fixing.

ORIGINAL FRONT FORKS HUSQVARNA

after my longer 10 cm front forks BETOR HUSQVARNA

I don't see why not as long as the stanchions are 35mm. You would also need to change the valve body in the bottom of the stanchion to the one in your 73. For a detailed explanation on what will work call John at Vintage Husky. The guy has been messing with Husky stuff for decades and may even have what you need. He will be glad help you out with this.

My thought is if you have to use the damping rod parts from the longer fork tube you'll have to consider making internal spacers to limit the travel. If you don't, you could end up with a dangerous situation where at full extension your original lowers don't have enough "overlap" with the fork tubes and could break.

Thanks chaps.

Some additional information to consider:

Fork tube inner diameters are different for the silver and black leg forks - some 73's came with one or the other. This will impact which damper rod parts to use. markt2 makes an important point to keep in mind.

Also to keep the bike level, longer rear shocks will need to be used. This may end up in a situation in that the chain will be constantly rubbing on the swingarm pivot due to the increased angle of the swingarm. A chain slider and/or larger countershaft sprocket can help alleviate this. With the swingarm at the increased angle the wheelbase will be shorten. You may want to consider using a swing arm from a 74 250 Mag (1"(25mm) longer) to compensate. This will require a longer chain. All these modifications will impact how your 73 handles.

The approximate fork lengths from top of tube to axle centerline are: 73 - 32" and 78 - 35". A different approach, and much less expensive, would be to add a couple of inches of foam (common CZ/Maico mod) to the seat and either a taller pair of handlebars or handlebar risers. This approach would also mitigate what could be some not so positive handling impacts.

Attached are pages from Husky Newsletter #38. While not directly answering your question, it provides background info for fork parts interchangeability.

Vinskord, thats a nice write up on early fork comparisons.

Excellent stuff Vinskord.
Much obliged to you.
BD