Difference between revisions of "Betsys 2wd to Syncro Conversion"
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:* 0.73 with no larger than 28" tires | :* 0.73 with no larger than 28" tires | ||
+ | |||
+ | Now, let's look at the RPM for my sort of driving 63-70mph | ||
+ | |||
+ | Most common tire sizes; 27-30 that I may do: | ||
+ | |||
+ | ===== Ratios ===== | ||
+ | |||
+ | [https://spicerparts.com/calculators/transmission-ratio-rpm-calculator RPM Calculator] | ||
+ | |||
+ | '''26"''' | ||
+ | |||
+ | : @ 1.14 @ 2850rpm @ 39.8mph | ||
+ | : @ 0.70 @ 2850rpm @ 64.8mph | ||
+ | : @ 0.73 @ 2850rpm @ 62.2mph | ||
+ | : @ 0.77 @ 2850rpm @ 58.9mph | ||
+ | |||
+ | : @ 1.14 @ 2950rpm @ 41.2mph | ||
+ | : @ 0.70@ 2950rpm @ 67.1mph | ||
+ | : @ 0.73@ 2950rpm @ 64.3mph | ||
+ | : @ 0.77@ 2950rpm @ 61.0mph | ||
+ | |||
+ | : @ 1.14 @ 3000rpm @ 41.9mph | ||
+ | : @ 0.70@ 3000rpm @ 68.2mph | ||
+ | : @ 0.73@ 3000rpm @ 65.4mph | ||
+ | : @ 0.77@ 3000rpm @ 62.0mph | ||
+ | |||
+ | '''27"''' | ||
+ | |||
+ | : @ 1.14 @ 2850rpm @ mph | ||
+ | : @ 0.70 @ 2850rpm @ mph | ||
+ | : @ 0.73 @ 2850rpm @ mph | ||
+ | : @ 0.77 @ 2850rpm @ mph | ||
+ | |||
+ | : @ 1.14 @ 2950rpm @ mph | ||
+ | : @ 0.70@ 2950rpm @ mph | ||
+ | : @ 0.73@ 2950rpm @ mph | ||
+ | : @ 0.77@ 2950rpm @ mph | ||
+ | |||
+ | : @ 1.14 @ 3000rpm @ mph | ||
+ | : @ 0.70@ 3000rpm @ mph | ||
+ | : @ 0.73@ 3000rpm @ mph | ||
+ | : @ 0.77@ 3000rpm @ mph | ||
+ | |||
+ | '''28"''' | ||
+ | |||
+ | : @ 1.14 @ 2850rpm @ mph | ||
+ | : @ 0.70 @ 2850rpm @ mph | ||
+ | : @ 0.73 @ 2850rpm @ mph | ||
+ | : @ 0.77 @ 2850rpm @ mph | ||
+ | |||
+ | : @ 1.14 @ 2950rpm @ mph | ||
+ | : @ 0.70@ 2950rpm @ mph | ||
+ | : @ 0.73@ 2950rpm @ mph | ||
+ | : @ 0.77@ 2950rpm @ mph | ||
+ | |||
+ | : @ 1.14 @ 3000rpm @ mph | ||
+ | : @ 0.70@ 3000rpm @ mph | ||
+ | : @ 0.73@ 3000rpm @ mph | ||
+ | : @ 0.77@ 3000rpm @ mph |
Revision as of 20:24, 10 November 2018
It’s happenening! I’m going all out on quality hardware; Burley gear, GT hardware, etc. This may take a year to complete!
08/01/2018 - Decided I’ll need the diesel syncro fuel tank $243
10/30/2018 - GoWesty fuel tank refresh; sender, vent nipples, straps - $452
11/09/2018 - I have a sale pending for a fuel line fire syncro donor for $3500!
Research
Transmission
Gearing
This is always the tricky part.
The consensus is a 4.86 Ring & Pinion is the way to go for a TDI transplant.
As for the gearing;
1.88 for 2nd is popular if you use a Euro mainshaft
1.14 is popular for the 3rd gear.
As always 4th is all over the map, likely due to tire sizes. The most popular from known drivers are;
- 0.77 with 30" tires
- 0.73 with no larger than 28" tires
Now, let's look at the RPM for my sort of driving 63-70mph
Most common tire sizes; 27-30 that I may do:
Ratios
26"
- @ 1.14 @ 2850rpm @ 39.8mph
- @ 0.70 @ 2850rpm @ 64.8mph
- @ 0.73 @ 2850rpm @ 62.2mph
- @ 0.77 @ 2850rpm @ 58.9mph
- @ 1.14 @ 2950rpm @ 41.2mph
- @ 0.70@ 2950rpm @ 67.1mph
- @ 0.73@ 2950rpm @ 64.3mph
- @ 0.77@ 2950rpm @ 61.0mph
- @ 1.14 @ 3000rpm @ 41.9mph
- @ 0.70@ 3000rpm @ 68.2mph
- @ 0.73@ 3000rpm @ 65.4mph
- @ 0.77@ 3000rpm @ 62.0mph
27"
- @ 1.14 @ 2850rpm @ mph
- @ 0.70 @ 2850rpm @ mph
- @ 0.73 @ 2850rpm @ mph
- @ 0.77 @ 2850rpm @ mph
- @ 1.14 @ 2950rpm @ mph
- @ 0.70@ 2950rpm @ mph
- @ 0.73@ 2950rpm @ mph
- @ 0.77@ 2950rpm @ mph
- @ 1.14 @ 3000rpm @ mph
- @ 0.70@ 3000rpm @ mph
- @ 0.73@ 3000rpm @ mph
- @ 0.77@ 3000rpm @ mph
28"
- @ 1.14 @ 2850rpm @ mph
- @ 0.70 @ 2850rpm @ mph
- @ 0.73 @ 2850rpm @ mph
- @ 0.77 @ 2850rpm @ mph
- @ 1.14 @ 2950rpm @ mph
- @ 0.70@ 2950rpm @ mph
- @ 0.73@ 2950rpm @ mph
- @ 0.77@ 2950rpm @ mph
- @ 1.14 @ 3000rpm @ mph
- @ 0.70@ 3000rpm @ mph
- @ 0.73@ 3000rpm @ mph
- @ 0.77@ 3000rpm @ mph