Have started 30cc motors and more. The gearing on this allows you to start everything and efficiently. I truely wish I had someone sell this to me as my first starter. Then I wouldn't have ever had to buy anything else.

Have many people at the field asking if they can borrow this. I did worry at first about trying to start a 30CC motor (1.8 CI) but it handled it fine. Yet, you can use it to start even the smallest nitro motor in your fleet.

I attached this to a 12 volt sealed lead acid battery so I could use it more without a cord.
My only down point is I wish they would include something to mount it to a 12V sealed battery. Otherwise this is as good as it gets. BTW started a 40CC motor with it too. (Posted on 1/13/13)

Just wanted to mention that I have been using this starter now with a 5000 mAh 4S LiPo to crank my radial and it spins it faster than the engine idles on its own! :^) (Posted on 10/12/12)

Dumped all smaller starters when I got this. Had it for 6 years. Mounted it on a 12V sealed battery. Regularly start 30cc motors.

If you need anything more than this then you need a Dynatron or a Megatron from Sullivan. I have a Megatron running on 24v for 50-100cc motors. For everything else I use the Magnum Starter and it is the ONLY starter I recommend to my students (Posted on 6/15/12)

Mike, our service dept uses this starter everyday on engines up to 50cc. Did you test your battery? Is the engine "wet"? You may want to use 24v battery to turn prop, (short bursts) Matt

Wow just tried to start my ys 110 and it would not turn past the compression stroke. Ive had many starters before that worked just fine, this was a waste of $70, im going to try to return it tomorrow. (Posted on 3/18/12)

This starter is the best. I have started 50cc motors with this. I expected up to 30cc which is about equal to a 1.8 CI engine. That would be within the specs of this starter. But as long as it is just past TDC you can do a 50CC.

Point is that other starters most people buy have troubles once you get up to a .90.

Had this starter 4-5 years. It is mounted on its own 12 volt battery. I do wish they would sell the starter with mounts. This way it would be easier for other people to mount it the same way I have. Makes it very easy to use without bothering about where the cord to it is. (Posted on 1/26/12)

I've owned this starter for more than years. Had to replace the shear key one time. Easy to repair. Would recommend this unit highly. (Posted on 5/29/11)

Dave, we have customers who have been running this starter for 5+ years. Please contact our service department and see if we can help you. Matt

I purchased this starter May 20, 2010. It failed March 31, 2011. I haven't opened the case to discover the problem, but it sounds like stripped gears. A 90 day warranty comes with the purchase, so my $69.98 didn't buy all that much. I don't think the failure was due to abuse. The largest engine it started was a .91 four stroke. I've owned less expensive starters which lasted much longer and worked just as well. (Posted on 4/5/11)

I use this Magnum starter with a 5000mAh 3S LiPo to start a 4 C.I. 5-cylinder radial engine. It cranks it over easily. (Posted on 2/1/11)

I have had this starter for 2 years now and it will start a 1.80 saito four stroke with out any problems, all others are just childs play. (Posted on 11/12/10)