UHR Products
UHR will be producing some rocket-related items in the near future, including some high-power kits and other sundry items such as our Rocket Finder audible location device (below). These are distributed through the Deepsky Rocket Shop.
Hypertek fill-pipe adaptor
Fill pipe adaptor for Hypertek J hybrids
Hyperteks are great hybrid motors, but a lot of people are put off by the extra cost and hassle of all the GSE. You could invest in the new Trojan hybrids, but that's yet more expense. This adaptor fits in place of the standard Kline valve and allows a flexible fill pipe to be used instead of the rigid fill stem. Not only does this save the cost of the fill stem but it allows the motor to be ignited without oxygen, saving the cost of the igniter box, oxygen cylinder, regulator, flash-back arrestor, solenoid valve and all the associated plumbing. Just use the same ignition methods as for other hybrids - a coil of pic (see Technical on this site), AP or commercial hybrid igniter. Altogether this simple device could save around £400 in equipment. The metering orifices supplied with the motor are still used, so you get the same flexibility of thrust and burn time, and this is carefully designed so the full performance is not affected in any way. The adaptor is made of high-grade stainless steel, and uses push-fit connectors for the fill pipe - so no messing around trying to tighten compression fittings just right. Included are three lengths of 6mm fill pipe and thre push-fit pneumatic couplings - enough for three flights. Replacement fittings and fill pipes are inexpensive and can be obtained direct from us, or can be found on eBay. Use the standard Hypertek fuel grain, with any compatible tank. Fits the 54mm J-size motor. Price is to be around £25 - list of stockists to follow, or you will shortly be able to buy it direct from this site using PayPal. In stock from the end of January 2009.
Rocket Finder
UHR Rocket Finder
An audible locator beacon for high-power rockets. Features an ear-piercing 130dB sounder with a running time of up to two hours, in a compact package that will fit airframe tubes larger than 45mm. Weighs only 30 grammes. The unit is triggered by a Kevlar lanyard when the chute deploys, so the rocket will not be left screaming on the pad. Requires 4 LR44 button cells (supplied). Price £6.99 from Deepsky.
'Shorty' Hybrid Motor
One of the issues with hybrid motors is that they tend to be very long, especially the smaller HPR ones. This isn't a problem if the rocket is designed around the motor, but can be a barrier to those wanting to make the transition from solid motors to hybrids. Enter Shorty, an I-class hybrid with a 29mm core but a 54mm diameter case. This makes it an ideal option for any Level 1 rocket with a 54mm mount. The fill vent is located on the aft closure, so it doesn't even need a hole drilled in the airframe for it. Similar in performance to the 740mm-long RATT I-80 hybrid, this motor is less than 250mm long. The motor is currently in the design stages, and it is planned to cut metal on it soon. The image shows the motor with the inner and outer cases and the fuel grain transparent to show the inner components.
