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Old 03-29-2014, 10:41 AM   #1
Clayclev OP
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73 mx360 shocks

Looking for 14in shocks. I know they are originally 13in but looking for 14-14.25.
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Old 03-29-2014, 10:48 AM   #2
joexr
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Back in the 70's we used to move the bottom shock mounts forward on the swingarm to gain travel.
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Old 03-29-2014, 11:20 AM   #3
stainlesscycle
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i believe he is looking for height, not travel..
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Old 03-29-2014, 11:25 AM   #4
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He'll gain both either way.
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Old 03-29-2014, 12:48 PM   #5
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Quote:
Originally Posted by joexr View Post
He'll gain both either way.
yeah, but he's restricted to 4" for ahrma - even an inch forward mounting wiill gain too much travel.. i have an aftermarket mx250 swingarm with forward mounts, i haven't used yet, i have to build shocks with only 2" travel to comply..
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Old 03-29-2014, 01:23 PM   #6
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Gotta love AHRMA (sarcasm intended).
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Old 03-29-2014, 02:20 PM   #7
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i don't think there's anything wrong with the ahrma rules. the 4"/7" limit keeps it fair, i could easily make a 6"/9" suspension mx360, and it would very definitely give me an unfair advantage. it also keeps the bikes somewhat period correct. the pre-74.5 bikes had (mostly) 4" rearshocks (at best) back then, and racing them with the same limitations they had gives you a bit of respect for the fast guys in 74 for sure.. i think the suspension limits are correct for each era (pre-74.5,74.5-77, and no limit 78 and up) - just like it was when they were racing them current.

without period suspension rules i could put a mx360 motor in a 1982 husky and it wouldn't be anything like a 1973/1974 bike...
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stainlesscycle screwed with this post 03-29-2014 at 02:27 PM
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Old 03-29-2014, 07:07 PM   #8
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The biggest problem I have with the AHRMA rule on suspension travel is that Curnutt was making a bolt on 5" travel shock in 1972. Puchs, as you well know had more than for inches of rear suspension back as far as 1970. I raced vintage in the late 80's when everyone on the west coast were going by the CZ club rules that started vintage racing. It doesn't really matter anyway, that is my interweb opinion, and I don't plan on racing any AHRMA events in the foreseeable future. There is a back story so, PM me if you like.
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Old 03-30-2014, 06:41 PM   #9
Clayclev OP
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If you got more then 4in of travel armhavwill put a bump stop in the shock.
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Old 04-01-2014, 07:52 PM   #10
Scootern29
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That's fine and dandy. My point is that there were period shocks and bikes that had more than four inches of travel in 1974. To overlook that is a joke. That rule was made to make the big four strokes competitive with the lighter two strokes. Dick Mann wrote the rules, go figure (BSA rider). As you can tell I am not an AHRMA fan.
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Old 04-02-2014, 03:39 AM   #11
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Quote:
Originally Posted by Scootern29 View Post
That rule was made to make the big four strokes competitive with the lighter two strokes.
i don't see how this rule could make the 4 strokes more competitive? - 4" is 4" - if everybody has the same travel, it makes it even - whether 4" or 10"
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