1973 Servicar Diff

[Rocketman 3]

Can anyone tell me if the 1973 6 lug servicar diff had a park brake fitted, or how I can fit one. I am considering buying a sportster trike with a servicar back end but here in Australia trikes need to be fitted with a park brake that is mechanically operated.
Also are parts still available for the internals of the servicar diff??

[Bikerbozo]

My local H-D dealer has an early '70's Servicar. When I go to pick up my TG from a service this weekend, I will ask the mechanic your questions, if you don't get an answer by then.

[screwball]

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<img src="images/misc/quote_icon.png" alt="Quote" /> Originally Posted by <strong>Bikerbozo</strong>
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<div class="message">My local H-D dealer has an early '70's Servicar. When I go to pick up my TG from a service this weekend, I will ask the mechanic your questions, if you don't get an answer by then.</div>

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</div>IF your dealer is like any of the 5 we have locally, none of the mechanics were even born when Harley was making Servicars. I'd bet half of them don't have any idea what a Servicar is/was<img src="images/smilies/laugh.gif" border="0" alt="" title="Laugh" class="inlineimg" /><img src="images/smilies/laugh.gif" border="0" alt="" title="Laugh" class="inlineimg" />

[buster]

I believe we talked on another board. The stock parking brake I posted photos of at the other place will not fit a Sportster, since the brake pedal area is completely different. I have both an original 1956 Servicar and a late model 91 Harley Tour Glide I converted to a trike. Servicar rear end parts readily available are axles (expensive), brake shoes/linings, truss rods, wheel cylinders, master cylinders, and brake lines. The Servicar rear end parts very hard to find used are rear brake drums. Most other parts are available used on Ebay. Servicar rear ends were made to run at top speed of 45 miles and hour, with 22 HP, and with 3.5" wide rims and tires. The bad part about a faster, higher horsepower conversion with a Servicar rear end and wider car rims and tires is the only axle retainer is at the end of the axles were they attach to the spider gears at differential, there are no outboard axle retains at the outer bearings like a modern car or trike rear end. I would not utilize one for a converision if I was going to ride any mileage at high speeds, it is very dangerous when an axle comes out at 70 mph. But I know people still ride conversions with Servi rear ends. I would find a good used Sportster and buy a modern rear end and swingarm and do conversion.<br />
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I believe you can buy a modern conversion rear end and swing arm for about $3,500.

If I did that, I would not buy a modern rear end that the manufacturer would not furnish me a list of common replacement parts (bearings, etc) which can be bought locally if standed on trip. Many new conversion rear ends are made out of country and the only place you can get replacement parts is through the dealer that handles that type of conversion, which will not help you when stranded on the highway. I want a rear end I can go to an Autozone, Chevy, or Ford dealer and buy common parts.

[Rocketman 3]

Thanks very much for that info Buster, very interesting.

[david lee]

Can anyone tell me if the 1973 6 lug servicar diff had a park brake fitted, or how I can fit one. I am considering buying a sportster trike with a servicar back end but here in Australia trikes need to be fitted with a park brake that is mechanically operated.

Also are parts still available for the internals of the servicar diff??

im interested in the hand brake setup mine has a modified early ford diff