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CONSTANT GEAR TRAIN ASSY TR3A-5
CURRENTLY UNAVAILABLE
Fitted to 3A-4-4A, 250 & 5, 148949 is a gear set consisting of an imput shaft and constant gear which were interchangeable as a pair. The bore of the input gear is 1.125" and suits bearing 145008
This part appears on the following Triumph Catalogue Plates
Car Type | Plate | Plate Title | Plate No. | Triumph Part Description | No per Unit |
TR250 | P | GEARBOX: Internal | CONSTANT GEAR TRAIN ASSEMBLY Comprising Items P.31, and P.43 |
1 | |
TR6CP | AA | GEARBOX: Internal | AA31A | CONSTANT GEAR TRAIN ASSEMBLY Comprising items AA31 and AA43, Fitted up to Gearbox No. CD20281 |
1 |
TR6CC | AA | GEARBOX: Internal | AA31A | CONSTANT GEAR TRAIN ASSEMBLY Comprising items AA31 and AA43, Fitted up to Gearbox No. CD20281 |
1 |
Further background
The input shaft in this gearbox has 22 teeth on the shaft and 35 on the countershaft gear. The spigot is 20mm long, but I think I need to lengthen this to 33mm, unless a gear exists that has the longer spigot.
I have found the problem with using the 20 mm spigot in a racing (200bhp) application, is that I believe the front of the shaft is not adequately supported when fitted to 4 cylinder engine, and the "skipping rope" action causes jumping out of 4th gear, and eventually, damage to the synchromesh dog teeth.
RevingtonTR Answer
Part No. | Description and Comments | Price | Add to Cart | |
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145008 |
CAGED NEEDLE BEARING TR5/6Revington TR information: USED WITH THE BIG NOSE MAINSHAFT UP TO G/BOX NO CD20281 1.1/8" O.D fitted to 3A-4-4A.5 in gear 148949 |
£25.78 Ex VAT @ 20% |
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148949CPS |
CONSTANT PINION SHAFTRevington TR information: This is part of 148949 order this if required |
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148949GC |
GEAR, CONSTANTRevington TR information: Part of 148949 if required then order this. |
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148949SH |
Second Hand CONSTANT GEAR TRAIN ASSY |
£294.59 Ex VAT @ 20% |