motocross forks and yokes

[saffrican]

This is my first post since joining your forum. I relocated to the UK after many years of 4x4ing in SA. I now have in my possesion a complete BMW in boxes and I am inspired to build a HPN style tourer but on a budget of sorts. I cannot afford the WP or Marzochhi forks I see on the photos of the bikes but I do see that many are fitting upside down motocrosser front ends. These are ( relatively )affordable but which one is the best considering the greater weight of the BMW engine, panniers and rider/pillion on board? Are the motocross forks/yokes/single front disc strong enough as well or do I need to go to a specialist manufacturer?
I also see that the HPN franes have been altered to give a shallower steering angle for more stability but in a lot of homebuilt specials I gather the stock angles are used.
Any help from you experts will help a wannabe like me!

 

[jackassdave]

suzuki drz forks are a popular choice ,there will be along soon ,a lot more knowledgeble people than me im sure ,allso you can allways use the search button ,enter your subject and search

 

[Benjamin M]

Better to use google... for example put Site:, the site you want to search, and whatever in it.

site.com HPN Forks or whatever​

Also worth looking at advrider.com as the sceptics seem to be particularly keen on converting airheads into dirtbikes etcetera.

Hope this helps

 

[lewisjohn]

This is my first post since joining your forum. I relocated to the UK after many years of 4x4ing in SA. I now have in my possesion a complete BMW in boxes and I am inspired to build a HPN style tourer but on a budget of sorts. I cannot afford the WP or Marzochhi forks I see on the photos of the bikes but I do see that many are fitting upside down motocrosser front ends. These are ( relatively )affordable but which one is the best considering the greater weight of the BMW engine, panniers and rider/pillion on board? Are the motocross forks/yokes/single front disc strong enough as well or do I need to go to a specialist manufacturer?
I also see that the HPN franes have been altered to give a shallower steering angle for more stability but in a lot of homebuilt specials I gather the stock angles are used.
Any help from you experts will help a wannabe like me!

I am in the middle of converting an RT into a sort of HPN type special,i am using the front end off a Suzuki DR350S .I have a thread running entitled Project Bike Advice which explains what i have done so far

 

[Box’a’bits]

I've just put a 48mm Kayaba front end on my GS. Here's the link. & here's what it looks like now. I've limited travel to 225mm (from 300 mm) to retain stockish geometry.

It makes a big difference to how the bike rides. I'll put up my costs on that link in the next few days.

 

[saffrican]

thanks for all the replies. I like your bike, BMWRSNUT, as it is exactly what I have in mind - nothing too radical or too high off the ground. I will be using a twin shock rear end as that is the frame I have but I will have to extend the swingarm a little but I have seen lots of ideas on that topic.

My main purpose will be to tour with my wife and have panniers and a topbox so the bike will have to carry a lot of weight and no, my wife weighs less than 50kg ........

How do you find the single disc setup and off what bike is it as it looks good.

I have just read your link and what a goldmine of information for me. Thank you for the excellent technical info and the brilliant photos!