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Post by jonnypaget on Feb 1, 2018 8:06:04 GMT -5
I would like to know if anyone has a proven front end swap for 71 H1 mach111 ? That is forks triple trees and wheel straight n. , thanks Jonny, first post, new member from Wollongong Australia 71 h1 owner.
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Post by zambia on Feb 1, 2018 8:48:06 GMT -5
Kawonda can chime in here - he's put H1B front end on more than one early H1
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Post by Walms on Feb 1, 2018 8:52:07 GMT -5
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Post by Walms on Feb 1, 2018 8:55:54 GMT -5
Looking at Zambia's post I guess I assumed wrong! Anyway, after you upgrade from a drum, the next thing you'll likely want to do is upgrade the caliper
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Post by autofobe on Feb 1, 2018 17:23:52 GMT -5
Most Yamaha and Suzuki up to about 1978 will bolt right on.Not Honda though,they are completely different.You might have to use the Yamaha bottom bearing & the Kawasaki top bearing.After that it takes a little more work,like transplanting the triple stearing stem into the new triples.
if you google "stearing stem bearing sizes" then click on the (Do the ton) sight,it list all the bearing ID/OD sizes for
most street bikes.
Brad
any triple 500 or 750 front will fit
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Post by III on Feb 1, 2018 19:19:35 GMT -5
I believe all the triples use the same size stem in the triple trees.
So an S series front end with the wheel or similar would work dont you think?
H1B as well as mentioned about Daves experiences.
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Post by kawonda750 on Feb 1, 2018 19:25:51 GMT -5
I added the 72 H1B to my 71 H1a. You have to change the triple tree too because there is a slightly different rake and thicker fork legs. I added to that an EX caliper and an Ex master cylinder. I used the bigger 5/8 master because originally. I had dual discs but changed to a single disc because I listened to the board talk about lightening the front end. There was alot of talk about needing a smaller master but this one seems to work really well for me. I do use EBC pads which I feel are the best whether this makes any difference in the stopping power, I don't know.
THe whole deal fits right on with no problem. I have also heard that it is necessary to thin down the rotor which I have never bothered with. It works very well in this incarnation for me.
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Post by ballvo on Feb 1, 2018 20:32:04 GMT -5
I’ll chime in as well...
I replaced the stock front end on my H1A with one from an S2A (350cc). Th triiple trees are a direct fit, using the same bearings as the H1, fork tubes are the same diameter (34mm) and it gets you a front disc brake. The EX caliper bolts on but needs an adapter bracket made. The biggest difference is the 18 inch wheel vs the stock 19 inch.
N.
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Post by autofobe on Feb 1, 2018 21:44:55 GMT -5
Like I just said above all triple front ends are a direct bolt on
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