Wildguzzi.com
General Category => General Discussion => Topic started by: lazlokovacs on June 14, 2023, 04:48:27 PM
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gentlemen of the guzzi cognesenti here is my question -
ambassador 750 engine with an 1100 5-speed box and a LM 7/33 rear drive and swingarm - does that sound like a good combination?
(got a loop I'd like to rebuild and trying not to buy too many new parts)
and here's my second question, will the LM 7/33 mate up to the loop rear drum brake wheel?
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The Le Mans 1000 has a longer swingarm and may cause clearance issues with the fender and/or require different shocks.
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The Le Mans 1000 has a longer swingarm and may cause clearance issues with the fender and/or require different shocks.
I have a long mk 4 swinging arm on my 67 loopy, std fender no dramas
Yes, slightly longer shocks are wise, mine have ride height adjustment , useful when one plays with stuff.
And Charlie, clue was in thread title —— Le Mans 1000, all had long arms
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thanks guys,
got most of it lined up on the bench today
can I use the loop swingarm?
750 engine + cali 5 speed gearbox + the original loop swingarm + lemans1000 rear drive?
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thanks guys,
got most of it lined up on the bench today
can I use the loop swingarm?
750 engine + cali 5 speed gearbox + the original loop swingarm + lemans1000 rear drive?
No, you'll need a later swingarm. Why? The flange on the pinion carrier of 7/33 rear drive is 2 mm thicker than that of a Loop rear drive. If you bolt the 7/33 onto the Loop swingarm, and try to install the rear axle, you'll find the rear axle is cocked at an angle.
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thinking about this some more, (always a good step before diving in)
would the 750 engine be happier pushing a LM5 gearbox swingarm and rear drive?
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thinking about this some more, (always a good step before diving in)
would the 750 engine be happier pushing a LM5 gearbox swingarm and rear drive?
Which 5 spd. or swingarm you use is going to make very little difference.
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thanks Charlie,
so the cali 1100 5 speed and rear drive won't be geared too high for the 750??
I'm not looking for performance here, plan is to build a comfy 2-up rider.
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thanks Charlie,
so the cali 1100 5 speed and rear drive won't be geared too high for the 750??
I'm not looking for performance here, plan is to build a comfy 2-up rider.
Cal 1100 gear ratios:
1st 1:2 (Z=14/28)
2nd 1:1.3889 (Z=18/25)
3rd 1:1.0476 (Z=21/22)
4th 1:0.8696 (Z=23/20)
5th 1:0.7500 (Z=28/21)
Ambassador 4 speed gear ratios:
• Low gear 1 to 2.230 (13-29)
• Second gear 1 to 1.333 (18-24)
• Third gear 1 to 0.954 (22-21)
• High gear 1 to 0.750 (24-1)
7/33 rear drive = 4.714 to 1
8/37 rear drive = 4.625 to 1
8/35 rear drive = 4.375 to 1
8/33 rear drive = 4.125 to 1
So, if using a Cal 1100 transmission and 7/33 rear drive, the over all gearing will be lower than the stock Ambassador gearing. A stock Ambassador engine will have no problem with that gearing. An 8/33 rear drive will be a bit too tall for a stock Ambassador engine though, IMO.
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All stock parts on an Ambassador works good too.
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yes, I did the same calculations the 8/33 is too tall. Also, after experiementing ion the garage a bit today, the Cal 1100 swing arm doesn't actually seem to fit either. The bracing on the non-drive side fouls the passenger peg part of the frame.
Problem is... I do have 7/33 and lemans swingarm but its about 700 miles away from the eldo!
hmmmm
thanks for the info