MD 180 Broken Mast

[kirkdavis]

Originally Posted by Iceman

Impressive wrenching! I have had to do similar on snapped bolts on my son's moto bike. Glad this ended up working. The wrong sized masts were a surprise. This was one of the very first 180 drives, it had come with a Pro Angler, before I could even order separate drives.

Diggin' the new light and flakey carpet kit!

That is nice carpet....Same color as the underside of a halibut, and fringe that looks like fins!

[TJones]

of mast being shorter? or is this just one one the failures that comes with usage?

[ful-rac]

Originally Posted by TJones

of mast being shorter? or is this just one one the failures that comes with usage?

I would say it's a failure that comes with usage. I noticed that they have an updated version of the 180 drive that eliminates the screw and nut mechanism on the fin. Looks like they are calling it the MD180 V2. Looks like the style I have has now, since july has been discontinued.

[TheBentRod]

How many others feel this way?

"A couple weeks without my drive...? No... that will not do..."

Very resourceful! mad props!

[monstahfish]

I doubt warranty would let you go "a couple weeks" without your drive. That being said, nice work getting that out. Screw extractors are a life saver and a must have in everyone's garage.

[Mahigeer]

Are the shafts stainless steel?

If so drilling SS is very difficult.

Unless they are less grade of SS.

Regardless, good job on repairs.

[monstahfish]

Originally Posted by Mahigeer

Are the shafts stainless steel?

If so drilling SS is very difficult.

Unless they are less grade of SS.

Regardless, good job on repairs.

They are stainless but it can be drilled if done properly. Drilling stainless requires high pressure, low speed and lots of oil. If you overheat it, it will blue and break your bits.

[IN2DEEP]

Originally Posted by Mahigeer

Are the shafts stainless steel?

If so drilling SS is very difficult.

Unless they are less grade of SS.

Regardless, good job on repairs.

Def not a lesser grade stainless
The mast are made with Ph 17-4 SS which is heat treatable and is magnetic
The mast are much stiffer than 303, 304 or 316 SS of the same size.
As others have already said. Slow RPM with lots of pressure and cutting oil

[DanaPT]

Originally Posted by monstahfish

I doubt warranty would let you go "a couple weeks" without your drive. That being said, nice work getting that out. Screw extractors are a life saver and a must have in everyone's garage.

Absolutely looks like i need one of those thingamagies.

Nice work Tony... working like a surgeon.

[FISH11]

Nice work Tony, drilling out a broken bolt or stud is not easy because it's hard to drill centered and large enough to use an easy out that will bite well and hold the amount of pressure needed. In this case it helps that it's in a brass bushing and not rusted in. Even though this is a good post on a possible weak area. I wish you had told us about the nice Hali on board. I think the broken mast is because that mast had a defect other wise it would not have broken in that spot and not had stretch signs on the metal post instead of a clean break.